<!doctype html> 
<html> 
<head> 
    <meta charset="utf-8"> 
    <title></title> 
</head>
<body>
<script type="text/javascript">
	
//a = document.body;
//alert(a.wangyuechao);
	var timer = null;
	clearInterval(timer);
	timer = setInterval(function(){
		alert(1);
	},0);

</script>
</body>
</html>